摘要
针对正交频分复用系统的高峰均比问题,提出一种改进的串行峰均比抑制方法。该方法通过信号幅度的上升沿和下降沿精确寻找超过门限的峰值点;基于串行处理的模式,利用加权的窗函数对信号高峰值进行有效抑制。仿真结果显示,与现有方法相比,改进方法能够有效抑制峰均比,同时精确的峰值搜索能够减少峰值抵消次数,从而降低算法的实现复杂度,有助于改善系统的误码率性能。
An improved serial PAPR suppression method is proposed for the high peak-to-average power ratio(PAPR)of orthogonal frequency division multiplexing(OFDM)system.The proposed method is used to find the peak point exceeding the threshold via the rising edge and falling edge of signal amplitude.In the proposed method,a weighted window is used to effectively suppress the high peak in a serial processing mode.Simulated results show that,compared to the existing methods,the improved method is capable of effectively suppressing the PAPR,while the number of peak cancellations is reduced by its accurate peak search,which helps to reduce the implementation complexity and enhance the bit error rate(BER)performance.
作者
张仕超
陈冲
任帅
文彬
魏鹏
ZHANG Shichao;CHEN Chong;REN Shuai;WEN Bin;WEI Peng(The 10th Research Institute of China Electronics Technology Group Corporation, Chengdu 610036, Sichuan, China;School of Electronics and Information Engineering, Tiangong University, Tianjin 300387, China)
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2020年第3期526-533,共8页
Acta Armamentarii
关键词
正交频分复用
峰均比
串行峰值抵消
实现复杂度
误码率
orthogonal frequency division multiplexing
peak-to-average power ratio
serial peak cancellation
implementation complexity
bit error rate
